package ex02.pyrmont;

import javax.servlet.ServletResponse;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;

/**
 * 用于处理servlet和静态资源
 * Created by Administrator on 2016/7/1.
 */
public class HttpServer1 {
	/*
	* WEB_ROOT is the directory where our HTML and other files reside
	* For this package ,WEB_ROOT is the "webroot" directory under the working directory
	* The working directory is the location in the file system
	* from where the java command was invoked.
	* */
	public static final String WEB_ROOT = System.getProperty("user.dir") + File.separator + "webroot";

	//shutdown command
	private static String SHUTDOWN_COMMAND = "/SHUTDOWN";

	//the shutdown command received
	private boolean shutdown = false;

	public static void main(String[] args) {
		HttpServer1 server = new HttpServer1();
	}

	public void await(){
		ServerSocket serverSocket = null;
		int port = 8080;
		try {
			serverSocket = new ServerSocket(port,1, InetAddress.getByName("127.0.0.1"));
		} catch (IOException e) {
			e.printStackTrace();
			System.exit(1);
		}

		//loop waiting for a request
		while (!shutdown){
			Socket socket = null;
			InputStream input = null;
			OutputStream output = null;
			try {
				socket = serverSocket.accept();
				input = socket.getInputStream();
				output = socket.getOutputStream();
				//create request object and parse
				Request request = new Request(input);
				request.parse();
				//create response object
				Response response = new Response();
				response.setRequest(request);
				//check if this is a request for a servlet or a static resource
				//a request for a servlet begins with /servlet/
				if (request.getUri().startsWith("/servlet/")){
					ServletProcessor1 processor = new ServletProcessor1();
					processor.process(request,response);
				}else {
					StaticResourceProcessor processor = new StaticResourceProcessor();
					processor.process(request,response);
				}
				//close the socket
				socket.close();
				shutdown = request.getUri().equals(SHUTDOWN_COMMAND);
			} catch (IOException e) {
				e.printStackTrace();
				System.exit(1);
			}
		}
	}

}
